Tawny grisettes are a fairly common mushroom which I don’t remember ever seeing before. I’ve noticed them in several places this year.
https://www.flickr.com/photos/davea2007/9781988493
These were growing under a birch and an oak by the footpath across Compton Rough.
https://www.flickr.com/photos/davea2007/9781991583
All growing in one patch, so presumably all the same species.
https://www.flickr.com/photos/davea2007/9781893305
But notice the variation in the colours of the caps.
